Precise temperature control driving circuit of Stirling cryocooler and control method

Abstract

The invention discloses a precise temperature control driving circuit of a Stirling cryocooler. The circuit comprises an MCU main control circuit body, an FPGA module and a full-bridge driving module.The MCU main control circuit body is used for being in real-time communication with a computer or a system platform; the FPGA module is used for conducting collection process of temperature data, implementation of a vague PID control algorithm and generation of SPWM waveforms; the full-bridge driving module is used for improving the driving capacity. The MCU main control circuit body is electrically connected with the FPGA module, the FPGA module is electrically connected with the full-bridge driving module, and the full-bridge driving module is electrically connected with an acoustic energycompressor and a temperature collection module through an interface circuit; the acoustic energy compressor is electrically connected with the temperature collection module, and the temperature collection module is connected with the FPGA module through a temperature signal processing circuit. According to the precise temperature control driving circuit, through common use of an FPGA and an MCU, the advantages of the FPGA and the MCU are achieved to the greatest degree, which is beneficial to more precise temperature control and parameter interaction.

Description

technical field [0001] The invention relates to a precise temperature control drive circuit and its control method, in particular to a precise temperature control drive circuit and control method of a Stirling refrigerator, belonging to the field of electronic circuits. Background technique [0002] As an important branch of cryogenic technology, Stirling refrigerators are widely used in military, meteorological, aerospace, cryogenic electronics, cryogenic medicine and other fields. At the same time, with the promotion of its application and the improvement of cooling capacity, the Stirling refrigerator with large cooling capacity will also have great development potential and broad development prospects in general cooling industries such as civil refrigeration. However, due to the high technical cost of the Stirling refrigerator, the Stirling refrigerator is currently mainly used in the military and aerospace fields. The research on Stirling refrigerators in the field of g...

AI Technical Summary

Problems solved by technology

There is no corresponding controller development and application promotion for the Stirling machine with high power and large cooling capacity in China.

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